Basically yes, though we are of the same species as him. Not that being the same species makes him any less of an alien as in the Pearl of Great Price does say that there are other worlds on which humans live. The D&C also basically says there are non-human intelligent aliens out there as well.

The specific passage is in reference to the strange creatures in Revelation where the creatures do in fact report to our deity. There may be others that do not, if there are such information has not be revealed as of yet, though all things will eventually be revealed so I suppose we will eventually find out in some way, it just might not be until the millennium.